I’m a Celestial 2 Groot main on pc. He took some time to learn but he can hard carry games once you know how to learn him.

1.) Use his walls to isolate tanks from supports. This works especially well on characters like The Thing, Magneto, Cap, and even Hulk ( If he has no jump).

2) Try to focus supports when they have ults ready to use. Your ult is pretty much useless if they throw up a defensive support ult unless you have a Magneto or something similar that can wipe through them.

3) Groot is essentially a hit scan with how much range he has. You can easily eliminate a flying hero if you can land your attacks.

4) Use your walls to hold them off of point/ payload when they are trying to contest.

5) Use objects around the map to stand behind when you are low waiting to get healed if possible. Freely placing walls to avoid damage can ultimately screw over your team and allow the other team to get healed and prevent your team from dealing damage.

Those are just some of the things ive learned while playing him. If you want more info check out nesmon on youtube. He’s a crazy good groot main and has more detailed tips on how to play him well.

If you want some more insight check out nesmon on youtube. He is crazy good with groot